<!DOCTYPE html>
<html lang="en">

<head>
    <meta charset="UTF-8">
    <meta http-equiv="X-UA-Compatible" content="IE=edge">
    <meta name="viewport" content="width=device-width, initial-scale=1.0">
    <title>Document</title>

</head>

<body>
    <div id="box">
        <h1>登录</h1>
        <form action="">

            <span>用户名：</span><input type="text" name="username"><br>
            <span> 密　码：</span><input type="text" name="password"><br>
            <input type="button" value="提交" id="q"><br>
            <a href="reg.html">如果没有注册请先注册</a>
        </form>
    </div>
</body>

</html>